config

type Config struct {
	// PubSubSystem selects the backing message infrastructure. Supported values:
	// "kafka", "rabbitmq", or "aws" (SNS/SQS).
	PubSubSystem string

	// Kafka configuration.
	KafkaBrokers       []string
	KafkaClientID      string
	KafkaConsumerGroup string

	// RabbitMQ configuration.
	RabbitMQURL string

	// NATS configuration.
	NATSURL string

	// HTTP configuration.
	HTTPServerAddress string
	// HTTPPublisherURL is the base URL where messages will be sent.
	HTTPPublisherURL string

	// I/O configuration.
	// IOFile is the path to the file used for persistence.
	IOFile string

	// SQLite configuration.
	// SQLiteFile is the path to the SQLite database file.
	// Use ":memory:" for an in-memory database (useful for testing).
	SQLiteFile string

	// PostgreSQL configuration.
	// PostgresURL is the PostgreSQL connection string.
	// Example: "postgres://user:password@localhost:5432/dbname?sslmode=disable"
	PostgresURL string

	// PoisonQueue receives messages that cannot be processed even after retries.
	PoisonQueue string

	// AWS (SNS/SQS) configuration.
	AWSRegion          string
	AWSAccountID       string
	AWSAccessKeyID     string
	AWSSecretAccessKey string
	// AWSEndpoint optionally points to a custom endpoint (for example, LocalStack
	// in local development).
	AWSEndpoint string

	// RetryMiddleware tuning. Zero values fall back to library defaults.
	RetryMaxRetries      int
	RetryInitialInterval time.Duration
	RetryMaxInterval     time.Duration

	// Metrics configuration.
	MetricsEnabled bool
	// MetricsPort is the port where Prometheus metrics will be exposed.
	MetricsPort int

	// WebUI configuration.
	WebUIEnabled bool
	// WebUIPort is the port where the WebUI API will be exposed. Defaults to 8081.
	WebUIPort int
	// WebUICORSAllowedOrigins specifies allowed origins for CORS. Use "*" for development
	// or specific origins like "https://example.com" for production. Empty disables CORS headers.
	WebUICORSAllowedOrigins []string
}